The document discusses various programming topics, particularly comparing Ruby and PHP, including their syntax, object models, and frameworks like Ruby on Rails. It highlights the author's pet peeves and provides examples of variable assignment, methods, and application structure in both languages. The piece concludes with instructions for starting a Rails application with different database options.

1. Rails for the PHP Dev
(You know youʼre curious...)
November 7, 2009

4. BIGLAMPCAMP

6. blog.adsdevshop.com
rdempsey
atlanticdominionsolutions

7. My Pet Peeves

8. My Pet Peeves
People that drive slow (in general)

9. My Pet Peeves
People that drive slow (in general)
People that donʼt use their turn signal

10. My Pet Peeves
People that drive slow (in general)
People that donʼt use their turn signal
People that read books while they drive

11. My Pet Peeves
People that drive slow (in general)
People that donʼt use their turn signal
People that read books while they drive
People that canʼt make up their mind

12. My Pet Peeves
People that drive slow (in general)
People that donʼt use their turn signal
People that read books while they drive
People that canʼt make up their mind
People that post anonymous comments (weak)

13. My Pet Peeves
People that drive slow (in general)
People that donʼt use their turn signal
People that read books while they drive
People that canʼt make up their mind
People that post anonymous comments (weak)
Trolls, Internet or otherwise

14. My Pet Peeves
People that drive slow (in general)
People that donʼt use their turn signal
People that read books while they drive
People that canʼt make up their mind
People that post anonymous comments (weak)
Trolls, Internet or otherwise
People that fuck with my sprint

15. My Pet Peeves
People that drive slow (in general)
People that donʼt use their turn signal
People that read books while they drive
People that canʼt make up their mind
People that post anonymous comments (weak)
Trolls, Internet or otherwise
People that fuck with my sprint
Asshole bosses who wonʼt understand their people

20. Ruby - History

21. Ruby - History
Released in 1995 by Yukihiro “Matz” Matsumoto

22. Ruby - History
Released in 1995 by Yukihiro “Matz” Matsumoto
Blends Perl, Smalltalk, Eiffel, Ada, and Lisp

23. Ruby - History
Released in 1995 by Yukihiro “Matz” Matsumoto
Blends Perl, Smalltalk, Eiffel, Ada, and Lisp
Natural language syntax

24. Ruby - History
Released in 1995 by Yukihiro “Matz” Matsumoto
Blends Perl, Smalltalk, Eiffel, Ada, and Lisp
Natural language syntax
Mass acceptance in 2006

25. Ruby - Objects

26. Ruby - Objects
Everything is an object

27. Ruby - Objects
Everything is an object
Everything can be given its own properties (instance
variables) and actions (methods)

28. Ruby - Objects
Everything is an object
Everything can be given its own properties (instance
variables) and actions (methods)
All types have methods and instance variables

29. Ruby - Objects
Everything is an object
Everything can be given its own properties (instance
variables) and actions (methods)
All types have methods and instance variables
The same rules apply everywhere

30. Ruby - Objects
Everything is an object
Everything can be given its own properties (instance
variables) and actions (methods)
All types have methods and instance variables
The same rules apply everywhere
Remove, redefine, and extend at will

31. Ruby on Rails - History

32. Ruby on Rails - History
Released in 2005 by David Heinemeier Hansson

33. Ruby on Rails - History
Released in 2005 by David Heinemeier Hansson
Full-stack framework for developing database-backed web
apps

34. Ruby on Rails - History
Released in 2005 by David Heinemeier Hansson
Full-stack framework for developing database-backed web
apps
MVC

35. Ruby on Rails - History
Released in 2005 by David Heinemeier Hansson
Full-stack framework for developing database-backed web
apps
MVC
Builds on the power of Ruby

36. Ruby on Rails - History
Released in 2005 by David Heinemeier Hansson
Full-stack framework for developing database-backed web
apps
MVC
Builds on the power of Ruby
Convention over configuration

37. Ruby on Rails - Common Uses
Dynamic web sites
Data warehousing and data mining
Statistics reporting
Management applications
Collaborative apps
Community sites
E-commerce
...

38. PHP MVC Frameworks
Cake PHP
SolarPHP
Symfony
(others)

41. Arrays - PHP

42. Arrays - PHP
in_array($needle, $haystack);

43. Arrays - PHP
in_array($needle, $haystack);
array_push($haystack, $needle);

44. Arrays - Ruby
1
2
3
4

45. Variable Assignment - PHP

46. Variable Assignment - PHP
$a = array();

47. Variable Assignment - PHP
$a = array();
$b = $a;

48. Variable Assignment - PHP
$a = array();
$b = $a;
$a[ʻfooʼ] = ʻbarʼ;

49. Variable Assignment - PHP
$a = array();
$b = $a;
$a[ʻfooʼ] = ʻbarʼ;
var_export($a); => array(ʻfooʼ => ʻbarʼ)

50. Variable Assignment - PHP
$a = array();
$b = $a;
$a[ʻfooʼ] = ʻbarʼ;
var_export($a); => array(ʻfooʼ => ʻbarʼ)
var_export($b); => array()

51. Variable Assignment - Ruby

52. Variable Assignment - Ruby
a = {} => {}

53. Variable Assignment - Ruby
a = {} => {}
b=a => {}

54. Variable Assignment - Ruby
a = {} => {}
b=a => {}
a[ʻfooʼ] = ʻbarʻ => “bar”

55. Variable Assignment - Ruby
a = {} => {}
b=a => {}
a[ʻfooʼ] = ʻbarʻ => “bar”
a => {“foo” => “bar”}

56. Variable Assignment - Ruby
a = {} => {}
b=a => {}
a[ʻfooʼ] = ʻbarʻ => “bar”
a => {“foo” => “bar”}
b => {“foo” => “bar”}

57. Variable Assignment (2) - Ruby

58. Variable Assignment (2) - Ruby
a = ʻfooʻ => “foo”

59. Variable Assignment (2) - Ruby
a = ʻfooʻ => “foo”
b=a => “foo”

60. Variable Assignment (2) - Ruby
a = ʻfooʻ => “foo”
b=a => “foo”
a.reverse! => “oof”

61. Variable Assignment (2) - Ruby
a = ʻfooʻ => “foo”
b=a => “foo”
a.reverse! => “oof”
b.reverse! => “foo”

62. Variable Assignment (2) - Ruby
a = ʻfooʻ => “foo”
b=a => “foo”
a.reverse! => “oof”
b.reverse! => “foo”
a.equal? b => true

64. http://www.flickr.com/photos/floridapfe/

65. Methods - PHP
class Monkey
public function toss($fruit) {
// toss a piece of fruit at someone
}
}

66. Methods - Ruby
class Monkey
def toss(fruit)
# toss some fruit at someone
end
end

67. Methods (2) - PHP
class Monkey
public function toss($fruit, $feces = true) {
// toss a piece of fruit at someone
}
}

68. Methods (2) - Ruby
class Monkey
def toss(fruit, feces = true)
# toss some fruit at someone
end
end

69. Passing Named Params - PHP
class Building {
public function __construct($height = 10, $width = 10,
$depth = 10)
{
// check and store params
}
}

70. Passing Named Params (2) - PHP
$b = new Building(10,20,30);

71. Passing Named Params (3) - PHP
$b = new Building(array(ʻheightʼ => 10,
ʻwidthʼ => 20,
ʻdepthʼ => 50));

72. Passing Named Params - Ruby
$b = Building.new(:height => 10,
:width => 20,
:depth => 50)

74. Example PHP Function
for ($bananas = 50, $bananas > 0; $bananas --) {
echo “The monkey has thrown $bananas bananasn”;
}

75. Example Ruby Block
50.downto(1) { | num | puts “#{num} bananas thrown” }

76. Example Ruby Block - Hidden Goodies
int.downto(limit) { |i| block } => int
Iterates block, passing decreasing values from int down to
and including limit.

77. Example Ruby Block
50.downto(1) { |num| puts “#{num} bananas thrown” }

78. Example Ruby Block - Result
50 bananas thrown
49 bananas thrown
48 bananas thrown
47 bananas thrown
46 bananas thrown
...
1 bananas thrown

79. Attributes - PHP
class Monkey {
protected $species;
public $name;
public function __construct($species, $name) {
$this -> species = $species;
$this -> name = $name;
}
}

80. Attributes - Ruby
class Monkey
def initialize(species, name)
@species = species
@name = name
end
def species
@species
end
...
end

81. Attributes - Ruby
class Monkey
attr_reader :species
attr_accessor :name
attr_writer :bananas_eaten
def initialize(species, name)
...
end

82. Method Visibility - PHP
public function ...
protected function ...
protected function ...
private function ...
public function ...

83. Method Visibility - Ruby
class SomeClass
def my_public_method
end
protected
# Everything down here is protected

84. Method Visibility - Ruby
class Monkey
private
def format(value)
value.capitalize
end

85. Typing- Ruby

86. Typing- Ruby
foo = ʻbarʻ => “bar”

87. Typing- Ruby
foo = ʻbarʻ => “bar”
foo = 42 => 42

88. Typing- Ruby
foo = ʻbarʻ => “bar”
foo = 42 => 42
foo + 2 => 44

89. Typing- Ruby
foo = ʻbarʻ => “bar”
foo = 42 => 42
foo + 2 => 44
foo + “2”.to_i => 44

91. Rails Application Structure
README
Rakefile
app
config
db
doc
lib
log
public
script
test
tmp
vendor

92. Rails Application Structure - app
app
- controllers
- helpers
- models
- views

93. Rails Application Structure - config
config
- boot.rb
- database.yml
- environment.rb
- environments
- initializers
- locales
- routes.rb

94. Rails Application Structure - db
db
- migrations
- schema.rb

95. Rails Application Structure - The Rest
doc
lib
log
public
script
test
tmp
vendor

96. Start a Rails App
rails -d mysql railsforphpdevs

97. Start a Rails App
rails -d postgres railsforphpdevs

98. Start a Rails App
rails -d sqlite railsforphpdevs

99. Thanks!
Questions?